ScyllaDB

ScyllaDB is a high-performance, distributed NoSQL database compatible with Apache Cassandra and Amazon DynamoDB APIs. Built on the Seastar asynchronous framework with a shared-nothing architecture, it delivers single-digit millisecond P99 latencies at massive scale. Organizations like Discord, Disney+, Expedia, Zillow, and Palo Alto Networks rely on ScyllaDB for real-time data-intensive applications. Available as open source, managed cloud (ScyllaDB Cloud), and enterprise editions, it runs on Linux and major cloud providers including AWS, GCP, and Azure.